SharePoint Server Subscription Edition AMA

Good morning! We are creating a little simple intranet based on Sharepoint Online for one our customer. We are experiencing many issues about enrolling apps. For example: 1) Feed Rss - We noticed that only Teams Sharepoint have this capability. A Communication Site havent't. Why ? 2) Personalized view missing - Sharepoint is integrated in Microsoft365, the user logged in is in the most cases a tenant user. Why there isn't an app or a solution to view personal inbox or week calendar? 3) Modern Sites experience give to user a better graphic impact, but they are more "fixed" compared to Classic Sites. Change a colour into a theme is an epic job. We are greatful about yours job, but I think it could be more useful a Modern Site experience more dynamic. Thank you for your attention. Best regards. Luca